NSN 6650-00-382-1881

Part Details | OPTICAL INSTRUMENT LENS

6650-00-382-1881 An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see WINDOW, OPTICAL INSTRUMENT. Excludes RETICLE, OPTICAL INSTRUMENT.

Alternate Parts: LD172589SHT11GP105, LD172589GP44REVD, LD172589GP105REVD, 685622PC12, 685622PC1-2, LD172589SHT11GP105, LD172589SHT11GP105, 6650-00-382-1881, 00-382-1881, 6650003821881, 003821881

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JAN 01, 196300-382-188121884 ( LENS, OPTICAL INSTRUMENT )
REFERENCE DRAWINGS & PICTURES

DOUBLET

Cross Reference | NSN 6650-00-382-1881
Part Number Cage Code Manufacturer
LD172589SHT11GP10514001GRAYCO OPTICAL CORP
LD172589GP44REVD10001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
LD172589GP105REVD10001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
685622PC1-210001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
LD172589SHT11GP10520838OPTICS FOR INDUSTRY INC
LD172589SHT11GP10554985WOLLENSAK OPTICAL CO
Technical Data | NSN 6650-00-382-1881
Characteristic Specifications
MATERIAL GLASS OPTICAL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE
COMPOUND LENS STYLE DOUBLET
INDIVIDUAL LENS STYLE DOUBLE CONVEX AND PLANO-CONCAVE
DIAMETER1.535 INCHES NOMINAL
AXIAL THICKNESS0.472 INCHES NOMINAL AND 0.118 INCHES NOMINAL
COMPOUND LENS OVERALL AXIAL THICKNESS0.591 INCHES NOMINAL
COMPOUND LENS EDGE THICKNESS0.331 INCHES NOMINAL
ELEMENT LEFT SURFACE RADIUS-1.614 INCHES AND 1.575 INCHES
ELEMENT RIGHT SURFACE RADIUS-1.614 INCHES
EQUIVALENT FOCAL LENGTH3.111 INCHES
BACK FOCAL LENGTH2.700 INCHES
FRONT FOCAL LENGTH3.156 INCHES
REFRACTION INDEX1.5725 NOMINAL AND 1.6439 NOMINAL
ABBE CONSTANTB57.500$$B33.800
FSC APPLICATION DATA1. OPTICAL SIGHTING AND RANGING EQUIPMENT